Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
General Description
Features
The AM4953 is a single-phase BTL output fan motor
driver designed by bipolar process. This IC
features high efficiency, silent operation and includes
lock shutdown and automatic restart functions. When
the motor is under lock condition, the lock
shutdown function turns off the output current. When
the lock condition is removed, the IC will
restart automatically and allow DC fan to run. It is
applied for high reliability and low noise application,
such as personal computers, notebook, car audio,
CPU cooling systems and power supplies in
consumer electronics systems.
•
•
•
•
•
•
•
•
The AM4953 is available in MSOP-10, SSOP-10,
MSOP-8, SOIC-8 and PSOP-8 packages.
BTL Output Single-phase Full-wave Linear
Drive (Gain Resistor=1k to 360kΩ, Gain=51dB)
Support Low-voltage Drive and Feature a Wide
Usable Voltage Range (2.2V to 16V)
Low Saturation Output (High Side and Low Side
Saturation Voltage): VSAT_TOTAL=1.2V (typical,
IOUT=300mA)
Built-in Lock Protection and Automatic Restart
Circuits
Built-in FG/RD Output
Built-in Hall Sensor Bias (VHB=1.45V)
Thermal Protection Circuit
Small-sized, High Thermal Capacity Package
Applications
•
•
•
MSOP-10
AM4953
Notebook, Personal Computers
Power Supplies in Consumer Electronics, Car
Audio
CPU Cooling Systems
SSOP-10
SOIC-8
MSOP-8
PSOP-8
Figure 1. Package Types of AM4953
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
1
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Pin Configuration
MM Package
M8 Package
(MSOP-10)
(MSOP-8)
IN+
1
10
RD
HB
2
9
FG
IN-
3
8
VCC
CT
4
7
OUT2
OUT1
5
6
GND
IN+
1
8
RD
IN-
2
7
VCC
CT
3
6
OUT2
OUT1
4
5
GND
GS Package
(SSOP-10)
IN+
1
10
RD
HB
2
9
FG
IN-
3
8
VCC
CT
4
7
OUT2
OUT1
5
6
GND
M Package
MP Package
(SOIC-8)
(PSOP-8)
IN+
1
8
FG/RD
IN+
1
8
FG
IN-
2
7
VCC
IN-
2
7
VCC
CT
3
6
OUT2
CT
3
6
OUT2
OUT1
4
5
GND
OUT1
4
5
GND
Figure 2. Pin Configuration of AM4953 (Top View)
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
2
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Functional Block Diagram
Figure 3. Functional Block Diagram of AM4953
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
3
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Ordering Information
AM4953
-
Circuit Type
G1: Green
Output Signal:
Blank: FG&RD/RD
F: FG
TR: Tape & Reel
Blank: Tube
Package:
MM: MSOP-10
GS : SSOP-10
M8: MSOP-8
M: SOIC-8
MP: PSOP-8
Package
Temperature
Range
Output
Signal
MSOP-10
FG & RD
SSOP-10
FG & RD
MSOP-8
RD
-40 to 105ºC
RD
SOIC-8
FG
PSOP-8
FG
Part Number
Marking ID
Packing
Type
AM4953MM-G1
4953MM-G1
Tube
AM4953MMTR-G1
4953MM-G1
Tape & Reel
AM4953GS-G1
4953GS-G1
Tube
AM4953GSTR-G1
4953GS-G1
Tape & Reel
AM4953M8-G1
4953M8-G1
Tube
AM4953M8TR-G1
4953M8-G1
Tape & Reel
AM4953M-G1
4953M-G1
Tube
AM4953MTR-G1
4953M-G1
Tape & Reel
AM4953FM-G1
4953FM-G1
Tube
AM4953FMTR-G1
4953FM-G1
Tape & Reel
AM4953FMP-G1
4953FMP-G1
Tube
AM4953FMPTR-G1
4953FMP-G1
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
4
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Absolute Maximum Ratings (Note 1, TA=25ºC)
Symbol
Value
Unit
Supply Voltage
VCC
20
V
Peak Output Current
IOUT
800
mA
FG/RD Pull-up Voltage
VFG/VRD
15
V
FG/RD Output Current
IFG/IRD
10
mA
Parameter
Thermal Resistance
(Junction to Ambient)
Thermal Resistance
(Junction to Case)
θJA
θJC
MSOP-10
195
MSOP-8
205
SSOP-10
155
SOIC-8
160
PSOP-8
110
MSOP-10
46
MSOP-8
48
SSOP-10
39
SOIC-8
40
PSOP-8
36
MSOP-10
PD
°C/W
585
MSOP-8
Power Dissipation
°C/W
SSOP-10
800
SOIC-8
780
PSOP-8
960
mW
Operating Temperature
TOP
-40 to 125
ºC
Storage Temperature
TSTG
-55 to 150
ºC
ESD (Human Body Model)
ESD
4000
V
ESD (Machine Model)
ESD
200
V
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
Min
Max
Unit
Supply Voltage
VCC
2.2
16
V
Hall Input Voltage
VICM
0
VCC-1.5
V
TA
-40
105
ºC
Operating Ambient Temperature
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
5
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Electrical Characteristics
VCC=12V, TA=25oC, unless otherwise specified.
Parameter
Supply Current
Symbol
Conditions
Min
Typ
Max
Unit
ICC1
VCT=L
6
8
9.6
mA
ICC2
VCT=H
2
4
6
mA
CT Charge Current
ICHG
1
1.7
2.5
µA
CT Discharge Current
IDHG
0.15
0.27
0.36
µA
CT Charge/Discharge
Current Ratio
RCT
5
7
10
CT Clamp Voltage
VCL
1.25
1.45
1.65
V
CT Comparator Voltage
VCP
0.25
0.45
0.65
V
ICHG / IDHG
OUT Low Saturation Voltage
VSAT_L
IOUT=300mA
0.25
0.45
V
OUT High Saturation Voltage
VSAT_H
IOUT=300mA
0.95
1.3
V
8
20
mV
Hall Input Sensitivity
VHN
FG Low Level Voltage
VFG
IFG=5mA
0.15
0.3
V
FG Leakage Current
IFGL
VFG=15V
1
10
µA
RD Low Level Voltage
VRD
IRD=5mA
0.15
0.3
V
RD Leakage Current
IRDL
VRD=15V
1
10
µA
HB Voltage
VHB
IHB=5mA
1.45
1.6
V
Apr. 2012
Rev. 1. 5
1.3
BCD Semiconductor Manufacturing Limited
6
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Typical Performance Characteristics
14
10
12
VCC=12V
8
ICC1 (VCT=L)
10
ICC (mA)
ICC (mA)
6
4
o
TA=25 C
ICC2 (VCT=H)
8
6
4
ICC1 (VCT=L)
2
2
ICC2 (VCT=H)
0
0
0
5
10
15
-40
20
-25
0
25
75
100
125
o
Figure 4. ICC vs. VCC
Figure 5. ICC vs. TA
800
2.0
o
VCC=12V,TA=25 C
700
VSATH
1.6
Package: MSOP-10/MSOP-8
600
PD (mW)
VSATL
VSAT (V)
50
TA ( C)
VCC (V)
1.2
0.8
500
400
300
200
0.4
100
0
0.0
0
200
400
600
-40
800
0
25
50
75
100
125
150
o
Figure 6. VSAT vs. IOUT
Apr. 2012
-25
TA ( C)
IOUT (mA)
Figure 7. PD vs.TA
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
7
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Typical Performance Characteristics (Continued)
1000
900
Power Dissipation (mW)
800
PD (mW)
Package: SOIC-8
Package: SSOP-10
600
400
200
750
600
450
300
150
0
0
-25
0
25
50
75
100
125
-50
150
-25
0
25
50
75
100
125
150
O
Ambient Temperature ( C)
o
TA ( C)
Figure 8. PD vs.TA
Figure 9. PD vs.TA
1200
1050
Power Dissipation (mW)
Package: PSOP-8
900
750
600
450
300
150
0
-50
-25
0
25
50
75
100
125
150
O
Ambient Temperature ( C)
Figure 10. PD vs.TA
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
8
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Truth Table
Items
IN-
IN+
1
H
L
2
L
H
3
Apr. 2012
CT
L
H
OUT1
OUT2
FG
H
L
L
L
H
H
Off
OFF
Rev. 1. 5
RD
Mode
L
Purring Rotation
H
Lock Protection
BCD Semiconductor Manufacturing Limited
9
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Typical Application
VRD
VFG
R1
HB
R2
(Note 4)
RD
IN+
FG
HALL
D1
VCC
IN-
AM4953
CT
OUT2
C2
C1
(Note 2)
GND
OUT1
L
VRD VFG
D1
R1
R3
C1
VCC
(Note 4)
RD
HB
FG
IN-
OUT1
AM4953
(Note 5)
AH921
IN+
OUT2
CT
GND
R2
(Note 4)
L
C2
Note 2: Adding D1 can protect the IC from destruction by reverse connection. If D1 is used, it is necessary to
insert a capacitor C1 to provide a regenerative current route. Similarly, if there is no nearby capacitor on the fan
power supply line, C1 will also be necessary to improve reliability. Its capacity should be larger than 2.2µF.
Note 3: If the line between Hall sensor output and Hall sensor input of IC is long, the noise may occur in this line.
But it can be eliminated by adding a capacitor C3.
Note 4: Each of R1 and R2 is recommended to be 51kΩ typical. R3 is recommended to be 2k and must be added
when VCC is larger than 20V.
Note 5: The package of AH921 is SOT-23-3. If it is packaged in TO-92S-3，please exchange IN- with IN+.
Figure 11. Typical Application of AM4953
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
10
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Mechanical Dimensions
MSOP-10
Apr. 2012
Rev. 1. 5
Unit: mm(inch)
BCD Semiconductor Manufacturing Limited
11
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Mechanical Dimensions (Continued)
SSOP-10
1.350(0.053)
1.550(0.061)
3.800(0.150)
4.000(0.157)
0.300(0.012)
0.450(0.018)
Unit: mm(inch)
4.700(0.185)
5.100(0.201)
1.000(0.039)
BSC
0.100(0.004)
0.250(0.010)
5.800(0.228)
6.200(0.244)
1.350(0.053)
1.750(0.069)
0.400(0.016)
1.270(0.050)
0
8
0.170(0.007)
0.250(0.010)
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
12
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Mechanical Dimensions (Continued)
MSOP-8
Apr. 2012
Rev. 1. 5
Unit: mm(inch)
BCD Semiconductor Manufacturing Limited
13
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Mechanical Dimensions (Continued)
SOIC-8
4.700(0.185)
5.100(0.201)
7°
Unit: mm(inch)
0.320(0.013)
1.350(0.053)
1.750(0.069)
8°
8°
7°
0.675(0.027)
0.725(0.029)
D
5.800(0.228)
1.270(0.050)
6.200(0.244)
TYP
D
20:1
0.800(0.031)
0.300(0.012)
R0.150(0.006)
0.100(0.004)
0.200(0.008)
0°
8°
1.000(0.039)
3.800(0.150)
4.000(0.157)
0.330(0.013)
0.190(0.007)
0.250(0.010)
1°
5°
0.510(0.020)
0.900(0.035)
R0.150(0.006)
0.450(0.017)
0.800(0.031)
Note: Eject hole, oriented hole and mold mark is optional.
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
14
Data Sheet
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4953
Mechanical Dimensions (Continued)
Unit: mm(inch)
3.202(0.126)
3.402(0.134)
PSOP-8
Apr. 2012
Rev. 1. 5
BCD Semiconductor Manufacturing Limited
15
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Diodes Incorporated:
AM4953FMTR-G1 AM4953GSTR-G1 AM4953MMTR-G1 AM4953FMPTR-G1 AM4953M8TR-G1